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  1. // CSurface.h
  2. //------------
  3.  
  4. #ifndef C_SURFACE
  5. #define C_SURFACE
  6.  
  7. #include <SDL.h>
  8. #include <iostream>
  9. #include <string>
  10. #include <map>
  11. #include "../Main.h"
  12.  
  13. using namespace std;
  14.  
  15. extern GlobalState g_applicationState;
  16.  
  17. class CSurface
  18. {
  19. public:
  20. 	CSurface(void);
  21.  
  22. 	static bool LoadImage(string name, string file);
  23. 	static void FreeImage(string name);
  24. 	static void Unload();
  25.  
  26. 	static bool DrawImage(string name, int x, int y);
  27. 	static bool DrawImage(string name, int x, int y, int x2, int y2, int w, int h);
  28.  
  29. private:
  30. 	static bool Draw(SDL_Surface* dest, SDL_Surface* src, int x, int y, SDL_Rect* rect);
  31. 	static map<string, SDL_Surface*> loadedSurfaces;
  32. };
  33.  
  34. #endif
  35.  
  36. // --------------------
  37. // CSurface.cpp
  38. //---------------------
  39.  
  40. #include <SDL_image.h>
  41. #include "CSurface.h"
  42.  
  43. CSurface::CSurface()
  44. {
  45.  
  46. }
  47.  
  48. bool CSurface::LoadImage(string name, string file) {
  49.  
  50. 	if(loadedSurfaces.find(name) == loadedSurfaces.end())
  51. 	{
  52. 		fprintf(stderr, "Attempt to load resource '%s' but is already in resources (file '%s')", name, file);
  53. 		return false;
  54. 	}
  55.  
  56. 	SDL_Surface* temp = NULL;
  57. 	SDL_Surface* result = NULL;
  58.  
  59. 	temp = IMG_Load(file.c_str());
  60. 	if(temp == NULL)
  61. 	{
  62. 		fprintf(stderr, "There was an error loading the temp surface for %s\n", file);
  63. 		return false;
  64. 	}
  65.  
  66. 	result = SDL_DisplayFormatAlpha(temp);
  67. 	SDL_FreeSurface(temp);
  68.  
  69. 	fprintf(stdout, "Loaded Image '%s' as '%s'\n", file, name);
  70.  
  71. 	loadedSurfaces[name] = result;
  72.  
  73. 	return true;
  74. }
  75.  
  76. void CSurface::FreeImage(string name)
  77. {
  78. 	if(loadedSurfaces.find(name) == loadedSurfaces.end())
  79. 	{
  80. 		fprintf(stderr, "Cannot find '%s' to free it", name);
  81. 		return;
  82. 	}
  83.  
  84. 	SDL_Surface* surf = loadedSurfaces[name];
  85. 	SDL_FreeSurface(surf);
  86. 	loadedSurfaces.erase(name);
  87. 	fprintf(stdout, "Unloaded Image '%s'\n", name);
  88. }
  89.  
  90. void CSurface::Unload()
  91. {
  92. 	if(loadedSurfaces.size() == 0)
  93. 		return;
  94.  
  95. 	for(map<string, SDL_Surface*>::iterator ii = loadedSurfaces.begin(); ii != loadedSurfaces.end(); ii++)
  96. 	{
  97. 		FreeImage(ii->first);
  98. 	}
  99. }
  100.  
  101. bool CSurface::DrawImage(string name, int x, int y) {
  102.  
  103. 	return Draw(g_applicationState.screen, loadedSurfaces[name], x, y, NULL);
  104. }
  105.  
  106. bool CSurface::DrawImage(string name, int x, int y, int x2, int y2, int w, int h)
  107. {
  108. 	SDL_Rect sourceRect;
  109.  
  110. 	sourceRect.x = x2;
  111. 	sourceRect.y = y2;
  112. 	sourceRect.w = w;
  113. 	sourceRect.h = h;
  114.  
  115. 	return Draw(g_applicationState.screen, loadedSurfaces[name], x, y, &sourceRect);
  116. }
  117.  
  118. bool CSurface::Draw(SDL_Surface* dest, SDL_Surface* src, int x, int y, SDL_Rect* rect)
  119. {
  120. 	if(dest == NULL || src == NULL) {
  121. 		return false;
  122. 	}
  123.  
  124. 	SDL_Rect destinationRect;
  125.  
  126. 	destinationRect.x = x;
  127. 	destinationRect.y = y;
  128.  
  129. 	SDL_BlitSurface(src, rect, dest, &destinationRect);
  130.  
  131. 	return true;
  132. }
  133.  
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https://ideone.com/KMxdn
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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